I think it's a somewhat relevant question at 90, but at 85 I'd suggest not caring and just leveling. Many boxers absolutely crush PvP while leveling and get the false impression it will be the same at 90; not so, unfortunately. It's a whole different ballgame at cap due to PvP power gear advantages, players who actually know how to PvP, and more focus from Blizz on balance. Additionally, it's kind of hard to determine DPS in PvP since your target is not static in any fashion. Your best bet is determining your DPS on a target dummy and then converting the numbers to account for PvP (much less than 100% uptime on target, some GCDs used for non damage abilities, resilience assumptions, etc)